Zimmermann 150.3421.70 Disc Brake Rotor - Front Left

Overview of Zimmermann Disc Brake Rotor 150.3421.70

The Zimmermann disc brake rotor 150.3421.70 is engineered for BMW M3 and Z4 models requiring precise braking performance. This two-piece brake disc combines durability with advanced design features to meet the demands of these vehicles.

• Two-piece brake disc design with alu hub floating quality
• High-carbon machining for enhanced wear resistance
• Outer diameter of 345 mm and thickness of 28 mm
• Coated surface for corrosion protection
• Bolt hole circle diameter of 120 mm with 10/5 hole arrangement
• Hub bore diameter of 79 mm and height of 52.5 mm
• Minimum thickness specification of 26.4 mm
• Weight approximately 8.66 kg

Technical Details and Design Features

The Zimmermann 150.3421.70 rotor features a two-piece construction with an aluminum hub that floats independently from the high-carbon steel braking surface. This design reduces unsprung weight and improves heat dissipation, which is critical for maintaining braking efficiency under demanding conditions. The rotor’s 345 mm outer diameter and 28 mm thickness provide a robust braking surface, while the 120 mm bolt hole circle and 10/5 hole arrangement ensure secure mounting on compatible BMW M3 and Z4 models. The coated surface offers protection against corrosion, extending the rotor’s service life. The hub bore diameter of 79 mm and height of 52.5 mm are engineered for precise fitment and alignment.

Compatible Vehicles and Applications

This disc brake rotor is specifically compatible with BMW M3 and Z4 models, designed to meet the braking requirements of these vehicles. It is suitable for drivers seeking replacement parts that maintain factory specifications and performance.

• Replacement for worn or damaged rotors on BMW M3 and Z4
• Addresses issues with brake disc warping or uneven wear
• Improves braking stability and heat management
• Reduces brake noise and vibration caused by rotor imperfections
• Restores proper rotor thickness for safe braking performance

Installation Notes and Tips

When installing the Zimmermann 150.3421.70 rotor, ensure the mating surfaces are clean and free of debris. Verify the bolt hole circle and hub bore dimensions match the vehicle specifications. It is recommended to replace brake pads simultaneously to optimize braking performance. Proper torque settings should be applied to mounting bolts to avoid rotor distortion.

Quality Assurance and Warranty

Zimmermann rotors are manufactured with high-carbon steel and aluminum hubs to meet stringent quality standards. The coated surface enhances corrosion resistance, contributing to long-term durability. While specific warranty details are not provided, Zimmermann products typically adhere to OEM quality requirements, ensuring reliable performance for BMW M3 and Z4 applications.